Heartleaf philodendron is the plant most recommended to beginners — and for good reason. Philodendron hederaceum survives conditions that would kill most tropical plants: low light, irregular watering, dry air, and weeks of neglect. It also trails or climbs attractively, produces new leaves quickly, and is almost impossible to kill with normal household conditions. The guide below covers what makes it different from pothos (commonly confused with it), how to get its leaves to grow large, and what to do about its most common problems.
| Heartleaf Philodendron Quick Care Summary | |
|---|---|
| Light | Bright to moderate indirect light; adapts to lower light |
| Water | Every 7–10 days; let top inch dry out |
| Humidity | 50–60% |
| Temperature | 60–85°F (15–29°C) |
| Fertilizer | Monthly spring–summer, balanced liquid fertilizer |
Why Is Heartleaf Philodendron Confused With Pothos?
Both plants trail on similar-looking stems with heart-shaped leaves, which is why they’re routinely sold next to each other and misidentified. The key differences:
- Leaf texture: Philodendron hederaceum leaves have a matte, slightly softer surface. Pothos (Epipremnum aureum) leaves have a distinctly waxy sheen and a different shade of green, often with golden variegation.
- Petiole: The stem where the leaf attaches to the vine is C-shaped (indented) in philodendron, rounded in pothos.
- New leaf emergence: Philodendron new leaves emerge from a cataphyll — a papery sheath that falls off as the leaf unfurls. Pothos leaves emerge without this sheath.
- Growth habit: In nature, heartleaf philodendron climbs trees and produces significantly larger leaves (12+ inches) with aerial roots for support. Pothos also climbs but leaves scale up less dramatically.
In terms of care, the two plants are similar enough that mixing up the names rarely causes practical problems — both need similar light, water, and soil. The distinction matters more for accurate plant identification than for day-to-day care.
Why Are Heartleaf Philodendron Leaves Getting Smaller?
Leaf size is directly related to growing conditions. Smaller-than-expected leaves indicate one or more limiting factors:
No Support to Climb
This is the biggest factor most people miss. In nature, heartleaf philodendron climbs trees and uses aerial roots to grip the surface. As it climbs, the leaves get progressively larger — a mature climbing specimen can produce leaves 8-12 inches long. A plant left to trail downward from a hanging basket stays in a juvenile state: small leaves, no aerial root development. Give it a moss pole or wooden board to climb and leaves will begin increasing in size within a few months.
Insufficient Light
Low light produces smaller, more widely spaced leaves. Bright indirect light produces larger, more frequent leaves. Moving closer to a window typically produces larger new leaves within 2-3 leaf cycles.
Root Bound Without Repotting
A severely root-bound plant with no room left in the pot produces smaller leaves as growth slows. Repot in spring if roots are circling the inside of the pot and emerging from drainage holes.
How to Care for Heartleaf Philodendron
What Light Does Heartleaf Philodendron Need?
Low to bright indirect light — the widest light tolerance range of any common houseplant. It survives in the corners of rooms where almost nothing else lives, but it is not merely surviving: it genuinely grows (slowly) in conditions as low as 25-50 foot-candles. For active, robust growth and larger leaves, bright indirect light (within a few feet of a window) is better. Avoid direct afternoon sun, which scorches the leaves.
How Often Should You Water Heartleaf Philodendron?
Water when the top inch or two of soil feels dry — roughly every 7-10 days in the growing season, every 2-3 weeks in winter. Heartleaf philodendron is more drought-tolerant than pothos: it stores some water in its stems and can tolerate going dry for a week or two beyond the ideal watering point without permanent damage. Overwatering is more damaging than underwatering; always use a pot with drainage holes.
What Soil Does Heartleaf Philodendron Need?
A loose, airy potting mix that drains well. Standard potting soil with 20% perlite added works well. In nature, it grows in organic matter on tree surfaces and forest floors — not dense, compact soil. Avoid heavy, water-retaining mixes that stay wet for more than a week after watering.
What Temperature Does Heartleaf Philodendron Prefer?
60-85°F (15-29°C). It is a tropical plant and dislikes cold drafts and sustained temperatures below 55°F (13°C). Otherwise it tolerates normal household temperature fluctuations without complaint.
What Humidity Does Heartleaf Philodendron Need?
Moderate — 40-60% relative humidity. It tolerates typical household air without the humidity requirements of calathea or alocasia. Brown leaf tips in dry air are common but not serious. A pebble tray helps in very dry conditions (below 30% relative humidity).
How Often Should You Fertilize Heartleaf Philodendron?
Monthly with a balanced liquid fertilizer during spring and summer. Reduce to every 6-8 weeks in autumn, stop in winter. This plant does not need heavy feeding — it grows quickly enough in good light without intensive fertilization. Over-fertilizing in low-light conditions produces weak, leggy growth.
Heartleaf Philodendron Varieties Worth Knowing
Philodendron hederaceum (standard) — The classic; deep green heart-shaped leaves, fast-trailing vines. The most widely sold form.
Philodendron hederaceum ‘Lemon Lime’ — Neon chartreuse foliage. Same easy care as the standard variety. New leaves emerge orange before maturing to yellow-green.
Philodendron hederaceum ‘Brasil’ — Green and yellow variegation, often with a lime center stripe. Slightly slower than the standard variety due to variegation (less chlorophyll). Needs brighter light to maintain variegation.
Philodendron hederaceum var. oxycardium ‘Micans’ — Velvety, bronze-green leaves with iridescent shimmer. More sensitive to overwatering than the standard form. Striking in hanging baskets where the velvet texture catches light.
How to Propagate Heartleaf Philodendron
Water propagation is the easiest method. Cut a stem with at least one node (the bump on the stem where leaves attach) and one or more leaves. Place in water so the node is submerged; keep the leaves above water. Roots emerge from the node within 2-4 weeks. Once roots reach 1-2 inches, pot in soil mix.
The plant produces roots so readily that propagation success rates are essentially 100% in healthy material. This makes heartleaf philodendron one of the best plants for sharing with others — take cuttings from long trailing vines, root them, and you have new plants in a month.
Is Heartleaf Philodendron Toxic to Cats and Dogs?
Yes. The ASPCA lists Philodendron hederaceum and philodendrons generally as toxic to cats, dogs, and horses. The toxic compound is insoluble calcium oxalate crystals, which cause immediate oral irritation, burning, drooling, difficulty swallowing, and vomiting when chewed or ingested.
The plant’s attractive trailing habit and tendency to grow at reachable heights makes it accessible to cats in particular. Keep trails out of reach and watch for cats attempting to chew the vines.
Common Mistakes With Heartleaf Philodendron
Letting it trail downward only. This keeps the plant in a permanent juvenile state with small leaves. Give it something to climb — a moss pole, wooden board, or even a rough wall — and the leaves will eventually grow significantly larger.
Overwatering it the same as other tropical plants. Heartleaf philodendron is more drought-tolerant than ferns, calatheas, or monsteras. It does not need frequent watering and suffers from root rot if kept consistently moist. A drier watering schedule works better.
Putting it in high humidity while forgetting the soil drains well. It doesn’t need high humidity like tropical jungle plants. What it does need is well-draining soil. These are opposite priorities — focus on drainage, not humidity.
Frequently Asked Questions
What is Philodendron cordatum vs Philodendron hederaceum?
Philodendron cordatum and Philodendron hederaceum are often used interchangeably in trade, and some authorities consider cordatum a synonym of hederaceum. For practical purposes, they are the same plant. The name you’ll see most in scientific literature is P. hederaceum; the name most often on plant labels is “heartleaf philodendron” or P. cordatum.
Why are my heartleaf philodendron leaves yellow?
Yellow leaves almost always indicate overwatering — especially if lower leaves are yellowing while the rest of the plant looks healthy. Allow the soil to dry more between waterings. Nutrient deficiency is a distant second cause, showing as interveinal chlorosis (yellow between leaf veins, green veins).
How long do heartleaf philodendron vines get?
Trailing indoors: 4-6 feet is typical for a well-grown plant. Climbing a support: vines can reach 10+ feet indoors and leaves will grow progressively larger as the plant climbs. Prune back regularly if you want a more compact, bushy appearance.
Can heartleaf philodendron live outdoors?
In USDA zones 11+ (tropical and subtropical), yes. In temperate climates, it can go outside in full shade or dappled light during summer but must be brought in before temperatures drop below 55°F (13°C).